银行业务 辽宁12选5开奖结果走势图基本 Brake

近年来,皮卡中使用的柴油发动机发生了显着变化,变得更加清洁,安静和强大。然而,尽管有了这些变化,柴油仍然没有’提供足够的发动机制动以帮助减慢车辆辽宁12选5开奖结果走势图基本。与汽油发动机不同,柴油发动机缺少节流阀,因此在车辆减速时,抵抗推向发动机的负载的阻力很小’的内部抗弯能力。

当将重型拖车拖到陡坡上时,这可能会导致一些白指时刻。到目前为止,售后市场一直以排气制动器为响应,排气制动器使用安装在涡轮增压器下游排气系统中的可关闭限制阀,以提供更多的发动机制动。

In the middle of the 2004 model year, GM introduced a variable geometry turbocharger (VGT) on the Duramax (LLY version) turbodiesel engine; this system allows electronic control of the vanes within the turbo, effectively increasing or decreasing the size of the exhaust outlet. 的factory designed the VGT to close the turbo vanes when exhaust flow is low during initial acceleration. This results in a higher turbine speed, which creates a quicker response time, effectively reducing turbo lag.

Gale 银行业务 Engineering利用VGT的功能与变速箱的附加电子控制相结合,生产出了新的SpeedBrake,从而大大改善了发动机制动性能。 辽宁12选5开奖结果走势图基本 Brake仅为2004年设计,配备Duramax(LLY版)柴油发动机的更新的Chevrolet和GMC皮卡,是与卡车连接的电子设备’电子控制模块(ECM),变速箱,VGT和驾驶员通过车辆用户界面(VUI)。当需要发动机制动时,SpeedBrake会命令变矩器离合器,齿轮选择和涡轮增压器中的叶片位置来产生所需的制动效果。锁止变矩器可消除打滑,因此发动机产生的所有制动效果都将传递到驱动轮上。无需在排气系统中安装阀门。

These trucks come with an 所有 ison transmission that includes a feature called Automatic Grade Braking (AGB), which monitors throttle position, brake application and speed and automatically selects a lower gear when appropriate. In 股票 configuration, this results in a higher engine speed and a slight increase in engine braking, but the AGB effectively does little more than provide an automated downshift and a side effect is relatively high engine speeds. GM specifications indicate the Duramax can rev to 4,800 rpm before valve float occurs; however, speeds above 3,900 rpm can be disconcerting to the driver.

 

With the 辽宁12选5开奖结果走势图基本 Brake, VGT vane position can be set to achieve a desired increase in exhaust backpressure. 银行业务 engineers designed the 辽宁12选5开奖结果走势图基本 Brake to select the best gear without causing excessive engine revs, and chose 3,800 rpm as the maximum allowable target –远低于出厂最大值。

的Vehicle User Interface (VUI) provides communication between the user and vehicle. During normal operation, the VUI will display vehicle speed, vane position, transmission temperature, engine-coolant temperature, operating gear, braking mode, target speed and system status. A menu allows for a variety of adjustment selections.

的driver has the option of setting warning alerts if either coolant or transmission temperature exceed a preset value. A status indicator will also communicate any faults that may be detected, allowing for quick and easy troubleshooting.

与传统的排气制动器(打开或关闭)不同,SpeedBrake具有几乎无限的设置范围,因此可以在下坡时使用“cruise control.”您可以在VUI上输入所需的辽宁12选5开奖结果走势图基本,SpeedBrake保持目标辽宁12选5开奖结果走势图基本。 辽宁12选5开奖结果走势图基本 Brake首先锁定变矩器,然后降档,直到选择了合适的档位。接下来,关闭VGT叶片,直到车速达到既定目标为止。一旦辽宁12选5开奖结果走势图基本稳定,叶片角度将根据需要变化,以将车速保持在其设定值的0.5 mph之内。可以选择25到75 mph的目标辽宁12选5开奖结果走势图基本,也可以使用该装置在没有目标辽宁12选5开奖结果走势图基本的情况下提供最大的制动。

Installation typically takes less than two hours. 的electronic module is mounted in the engine compartment, and a few plug-in connections are made; there isn’t any splicing or cutting into factory wiring. 的VUI mounts in a location of the driver’并通过插入仪表板下的诊断连接器访问OBDII系统。

的SpeedBrake can be operated in one of two modes, selectable on the VUI. 的“On” mode will activate all available braking features, attempting to slow the vehicle as much as possible. This mode is available down to 15 mph. 的“Speed Control”模式可让驾驶员选择目标辽宁12选5开奖结果走势图基本,SpeedBrake会减速至该辽宁12选5开奖结果走势图基本,然后保持该辽宁12选5开奖结果走势图基本。

在“On” mode, three strength selections are available to allow for variations in vehicle weight and user preference. 的“High” setting allows the highest level of braking activity by aggressively downshifting the transmission and is recommended for heavily loaded vehicles or when strong braking is desired. 的“Medium” setting achieves a moderate level of braking by slightly delaying transmission downshifts and is recommended for moderately loaded vehicles. 的“Low”设置会降低刹车活动的水平,建议用于轻载或空载车辆以及走走停停的行驶模式。

辽宁12选5开奖结果走势图基本 Brake也可以用作OBDII扫描工具。如果仪表板上出现检查引擎指示灯,则用户可以利用SpeedBrake读取,解释和清除所有代码。

辽宁12选5开奖结果走势图基本 Brake还可通过比较前后轮的辽宁12选5开奖结果走势图基本来监测湿滑的道路状况。如果检测到明显的辽宁12选5开奖结果走势图基本差,SpeedBrake将自动脱离并通知驾驶员手动刹车。此安全功能类似于工厂防抱死制动系统的功能。

In 2007, GM updated the Silverado and Sierra trucks, and a new diesel particulate filter (DPF) was added. 的updated version of the Duramax engine that includes a DPF is the LMM version. According to 银行业务, the 辽宁12选5开奖结果走势图基本 Brake functions seamlessly, without interruption to the DPF cleaning process on the new models.

测验

为了评估SpeedBrake,我们在配备Duramax发动机的2006年雪佛兰Silverado 4¥4皮卡上进行了一系列路试。在南加利福尼亚州的圣盖博山脉中选择了一个位置,使用的路段包括6.16%的坡度,’大约1英里长。这非常接近大多数最长的州际公路等级,其最大坡度设计为6%。

Each test was on the same stretch of road, and starting speed for each run was 55 mph. During each trial, the foot brake was not applied unless it was necessary to keep the vehicle at a safe speed. 的vehicle was towing a trailer, bringing combined weight to 18,500 pounds. In this sequence, the tow/haul mode was activated, which also activates the Automatic Grade Braking (AGB) feature.

股票

的“stock”基线测试以55英里/小时的辽宁12选5开奖结果走势图基本开始,使用了五挡。当我提起油门踏板时,卡车下坡加速。在没有踩刹车的情况下,当卡车达到63 mph时,工厂电子设备允许升至六档。这降低了发动机的转速,并允许更高的加辽宁12选5开奖结果走势图基本。在不到1-2英里的范围内,辽宁12选5开奖结果走势图基本达到了超过70英里/小时的超速行驶,需要踩刹车。这会激活AGB,导致在大约两秒钟内从第六档降到第五档到第四档。随着钻机减速至68英里/小时,我松开了脚刹并再次加速。在不到1-4英里处,卡车再次以70 mph的辽宁12选5开奖结果走势图基本行驶,这时我再次踩下了脚刹。

的AGB again caused a downshift, this time to third gear, causing engine rpm to reach 3,880 rpm. 的foot brake was used until speed was down to about 66 mph. After the foot brake was released, the vehicle maintained 65 mph for the remainder of the test run while in third gear. It was clear that the vehicle speed cannot be maintained without substantial use of the foot brake in 股票 condition.

辽宁12选5开奖结果走势图基本 Brake开启

一,手册“On”测试模式(不提供辽宁12选5开奖结果走势图基本控制),并且在五档时再次以55 mph的初始辽宁12选5开奖结果走势图基本进行测试。释放油门踏板后,SpeedBrake就会锁定变矩器离合器,然后启动降档至第三档,使发动机转速达到3,400。在涡轮叶片关闭以产生背压的情况下,卡车在51?2秒内减速。到1至4英里大关时,组合减慢至50 mph,当辽宁12选5开奖结果走势图基本降至49 mph时,SpeedBrake确定降档至第二档是安全的,使发动机rpm达到3,800 rpm。

的truck continued to slow, and by the 1?2-mile mark, speed was 34 mph (compared to 70 mph 股票). When speed dropped to 28 mph, the 辽宁12选5开奖结果走势图基本 Brake downshifted to first gear, bringing engine rpm to 3,500. 辽宁12选5开奖结果走势图基本 continued to drop, clear down to 15 mph. At 15 mph in first gear, factory controls force the torque-converter clutch to unlock to avoid stalling the engine, so 辽宁12选5开奖结果走势图基本 Brake responds by deactivating itself. As a result, the vehicle begins to slowly pick up speed. At 17 mph, the 辽宁12选5开奖结果走势图基本 Brake reactivates, thus establishing a control cycle between 15 and 17 mph. During this entire sequence, the foot brakes were never required nor applied.

辽宁12选5开奖结果走势图基本
控制方式

接下来我们测试“Speed Control”模式,目标辽宁12选5开奖结果走势图基本设置为50 mph。就像在“On”模式下,SpeedBrake锁定了变矩器离合器,然后从第五档降到第四档至第三档,然后完全关闭了涡轮叶片。当达到50 mph的目标辽宁12选5开奖结果走势图基本时,叶片位置会变化,以维持50 mph的辽宁12选5开奖结果走势图基本,并在其余的行驶过程中保持不变; 1英里/小时以内保持50英里/小时。

刹车了

银行业务’ 辽宁12选5开奖结果走势图基本 Brake is unlike anything offered by the factory or aftermarket, and it definitely works as claimed. It is obvious that a lot of development work went into this system. Despite its many features, the unit is easy to use, allowing the driver to concentrate on driving. During operation noise is minimal and allows normal conversation. 的SpeedBrake’s的设计增加了安全性并保护了发动机和车轮制动器。这将有助于减少维护和磨损,尤其是在牵引时,这在制动时可能会很困难,因此可以节省成本。我们测试的产品的建议零售价为1,429美元,并带有VUI界面。

Gale 银行业务 Engineering,(800)399-0491,
www.bankspower.com.

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